Oil-feed mechanism.



. G. SCHABPFER.

OIL FEED MEGHANISM.

APPLICATION FILED No.1?. 1909.

Patented JalLl, 1912.

vanto atten/nu;

a lu- UNITED sTATEs rATnNT onirica.

WILLIAM Gr. SCI-IAEFFER, 0F READING, PENNSYLVANIA, ASSIGNOR 'I'O READING STANDARD COMPANY, OF READING, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

OIL-FEED MECHANISIVI.

Y Specification of Letters Patent.

Application filed December 17, 1909.

To all whom t may concern:

Be it known that I, WILLIAM Gr. SCHARF- rER, a citizen of the United States, and a resident of the city of Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Oil Feed Mechanism, of which the following is a specification.

My invention relates to an improved oilfeed mechanism applicable particularly to motor cycle engines and adapted to automatically supply lubricating oil to the enf gine in regulated charges.

The invention is fully described in connection with the accompanying drawings, and the novel features are specically pointed out in the claims.

Figure 1 is an elevation illustrating a por* tion of the crank-casing of a motor cycle engine with my improved mechanism applied thereto; the latter being shown in section on the line 1 1 of Figs. 3 and 4. Fig. 2 is a sectional elevation on the line 2 2 of Figs. 3 and 4. Fig. 3 is a cross-section on the line 3 3 of Figs. 1, 2 and 4. Fig. 4 is a cross-section on the line 4 4 of Figs. 1, 2 and 3.

The crank casing of any ordinary motor cycle engine is indicated at 2, with the crank shaft 3 and cam shaft 4 mounted therein as usual; and my improved oil-feed mechanism is shown as a separate attachment to said casing, arranged in operative relation with the cam 5 on said cam shaft, and in communication with a suitable oil reservoir commonly employed but not shown, through'an oil conduit 6.

My improved attachment as shown comprises a casting 10 suitably secured to the outer face of the crank casing 2, and formed with a cylindrical chamber 11 having a peripheral inlet opening 12 to which said oil conduit 6 is connected, and a peripheral outlet opening 13 with a communicating passage-way 14 leading into the crank casing. Rotatably litted in this cylinder 11 is a piston 15 having a peripheral chargerecess 16 and a central piston shaft 17 eX- tending through a partition wall 18 between said cylinder and an alined chamber 20 adjacent the crank casing; said shaft as shown having a bearing in said partition wall and also in the crank casing. Fixed to said piston shaft 17 within the chamber 20, is a ratchet wheel 21; said wheel as shown being formed with recesses 22 between segmental tootlrportions 23, and provided with spring-pressed rollers 24 riding upon the eccentric bottom surfaces 25 of said recesses; and intermittent rotary move ment being imparted to said wheel in a well known manner by means of a rocking lever comprising a band portion 26 inclosing the wheel and an extension 27 whereby a rocking action is imparted to it as hereafter described. Said lever eXtension 27 projects as shown, into a recess 30 formed between alined plunger guide-ways 31, 32 adjacent one side of the wheel chamber 20. The guide-way 31, above said lever extension 27, is formed by a connecting tube through which a plunger 33 resting upon said lever extension 27, extends into the path of said cam 5 on cam shaft 4. In the lower guideway 32 is mounted a second plunger 34, which is pressed against said lever extension 27 by a spring 35 seated on a screw plug 36; said plunger and spring being regulated in position in the guide-way by adjusting nuts 37 so as to vary the extent of the rocking movement imparted by the cam to the lever 27 as may be required.

The operation is as follows: At each rotation of the cam shaft 4 the ratchet wheel 21 and the attached piston 15 are rotated a distance determined by the adjustment of the bottom plunger 34 which regulates the effective rocking action of the cam 5 upon the operating lever 26 27. As the charging recess 16 of the intermittently moved piston registers with the inlet opening 12 it receives each time a determined amount of oil, which is delivered through the outlet opening 13 when said recess is moved into register with the latter; the number of cam revolutions required for each charge being so regulated as to automatically maintain the desired amount of oil in the crank casing.

In order to insure the proper delivery of each charge I have found it important to positively remove the oil from the charge recess; and for this purpose I have provided an automatic sweeping device, consisting as shown of a finger 40 pivotally mounted at 41 and actuated by an L-shaped spring 42 to rise into said recess at each passage of the latter and thus insure the regular emptying of the charge notwithstanding the resisting tendency of the more or less compressed air in the casing.

What I claim is 1. In an oil feed mechanism comprising a cylinder With peripheral inlet and outlet openings, a rotary piston in said cylinder having a peripheral charge-recess adapted to register alternately with said openings, and a recess-sweeper pivotally mounted adjacent said outlet opening.

2.- An oil feed mechanism comprising a cylinder With peripheral inlet and outlet openings and a coaxial ratchet-Wheel chamber, a rotary piston in said cylinder having a peripheral charge-recess adapted to register alternately With said openings and a piston shaft extended into said chamber7 a ratchet-Wheel Xed to said piston shaft, a rocking-lever having an operating band encircling said Wheel, a plunger guide-vvay into which said lever projects, a reciprocating plunger for operating said lever and an alined spring-pressed plunger cooperating therewith, substantially as set forth.

In testimony whereof, I aiiix my signature, in the presence of two Witnesses.

VILLIAM G. SCHAEFFER. Vitnesses:

W. G. STEWART, D. M. STEWART.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

